Description
Overview:
The Valve Keeper is a small, precision steel component that locks the valve spring retainer to the valve stem, helping to keep the valve train secure under load. This genuine Briggs & Stratton part is engineered for reliable service in garden and light construction machinery using select Briggs & Stratton engines, such as 19L232-0036-F1 and 19L232-0037-F1. Built to OEM specification, it supports correct valve seating and stable operation across a wide range of engine speeds. Supplied to replace OEM No. 84012308 (superseding 499586), it fits directly with no modification when servicing cylinder heads or carrying out preventative maintenance. Suitable for equipment like lawn mowers, generators and pressure washers where dependable starting and smooth running are important.
Key Features:
- Genuine Briggs & Stratton part for assured compatibility and fit
- OEM reference 84012308; direct replacement for 499586
- Precision-machined steel for strength and long service life
- Helps maintain valve integrity, reducing risk of slippage and valve damage
- Consistent dimensions and tolerances for repeatable assembly
- Suitable for use during routine head rebuilds and full engine overhauls
- Straightforward fitting with standard hand tools, minimising downtime
- Supports efficient combustion and smooth running by keeping valve timing stable
- Compatible across many Briggs & Stratton single- and twin-cylinder models
- Designed for harsh engine environments in garden and site machinery
Typical Applications:
Used when replacing valves, springs or retainers, or when refreshing high-hour engines. Common on lawn mowers, lawn tractors, generators, pressure washers and small construction tools that use compatible Briggs & Stratton engines. Ideal for preventative maintenance to maintain starting performance, idle quality and overall engine reliability.
Also known as:
Valve collet, valve lock, split keeper, retainer lock, valve key. Often identified by OEM numbers including 84012308 and 499586 within Briggs & Stratton parts catalogues.
Fits Models:
19L232-0036-F1, 19L232-0037-F1, 19L232-0054-G1, 19L237-0042-F1, 205237-0042-F1, 21R702-0070-F1, 21R702-0087-G1, 21R707-0047-G1, 21R707-0082-G1, 21R707-0084-G1, 21R707-0086-F1, 21R707-0090-G1, 21R707-0098-G1, 21R806-0057-G1, 21R807-0051-G1, 21R807-0072-G1, 21T215-0110-G2, 315977-0006-G1, 315977-0007-G1, 319775-0109-E1, 31R907-0006-G1, 31R907-0007-G1, 31R907-0022-G1, 31R976-0016-G1, 31R977-0027-G1, 31R977-0029-G1, 31S977-0005-G1, 338577-0017-G1, 338577-0019-G1, 407876-0002-G1, 407876-0009-G1, 445977-0015-G1, 445977-0016-G1, 445977-0020-G1, 445977-0032-G1, 445977-0033-G1, 49G575-0111-E2, 49R877-0004-G1, 49R877-0005-G1, 49R877-0011-G1, 49R887-0006-G1, 49R977-0004-G1, 49R977-0008-G1, 49R977-0011-G1
Alternate Part Numbers:
84012308, 499586, BS499586, BS84012308
Product Specifications
| L&S Part No. | BS84012308 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Briggs & Stratton |
| OEM No. | 84012308 |
| Unit of Sale | 1 |
| Applications | 19L232-0036-F1, 19L232-0037-F1, 19L232-0054-G1, 19L237-0042-F1, 205237-0042-F1, 21R702-0070-F1, 21R702-0087-G1, 21R707-0047-G1, 21R707-0082-G1, 21R707-0084-G1, 21R707-0086-F1, 21R707-0090-G1, 21R707-0098-G1, 21R806-0057-G1, 21R807-0051-G1, 21R807-0072-G1, 21T215-0110-G2, 315977-0006-G1, 315977-0007-G1, 319775-0109-E1, 31R907-0006-G1, 31R907-0007-G1, 31R907-0022-G1, 31R976-0016-G1, 31R977-0027-G1, 31R977-0029-G1, 31S977-0005-G1, 338577-0017-G1, 338577-0019-G1, 407876-0002-G1, 407876-0009-G1, 445977-0015-G1, 445977-0016-G1, 445977-0020-G1, 445977-0032-G1, 445977-0033-G1, 49G575-0111-E2, 49R877-0004-G1, 49R877-0005-G1, 49R877-0011-G1, 49R887-0006-G1, 49R977-0004-G1, 49R977-0008-G1, 49R977-0011-G1 |
| Machine Type | Engines, Mowers, Generators, Pressure Washers |
| Fits Brands | Briggs & Stratton |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
